President Donald Trump will host a roundtable with American manufacturers on Friday, where he is expected to continue advocating for the GOP’s tax reform effort as Congress takes its first steps toward advancing the overhaul.

Trump will be joined by executives and workers from companies headquartered in West Virginia – a manufacturing state led by Democratic Sen. Joe Manchin – and Maryland, according to a White House official. The president will declare Oct. 6 “National Manufacturing Day” concordant with the administration’s efforts to revitalize the sector.

Manufacturing optimism has continued to hover near record highs, registering its highest three-quarter average in the most recent National Association of Manufacturers survey. While 89.8% of companies said they had a positive outlook for their own company, more than 87% of survey respondents thought the GOP’s tax reform plan would address their concerns with the current tax system.